Solve: `6-9sintheta=2cos^2theta`

Solve: cos2theta=cos^(2)theta

Solve : sin2theta=cos3theta

Solve sin 2 theta+cos theta=0 .

Solve: costheta+sintheta=cost2theta+sin2theta

The value of (2(sin2theta+2cos^2theta-1))/(costheta-sintheta-cos3theta+sin3theta) is adot costheta b. sectheta c. cosectheta d. sintheta

Solve: cos5theta=cos2theta

Solve: 5cos2 theta+2cos^(2)((theta)/(2))+1=0,-pi

Solve cos^(4)theta-sin^(4)theta=cos^2theta

Solve: sin4theta=sintheta

Solve sin2 theta+cos theta=0